[Ender is ragged, eyes still red and throat still sore, and stomach still tight as if he might be sick at any moment. Which are among many reasons why he opts for text] 

I have read the letter issued to me upon arrival. I am not trained for this type of mission. But if I have been selected then I have questions

[The use of the bracelet has proven to be extremely basic. Even the beginner levels at Ground School had more complex devices to train with than these. Back then they had had things that did more than record and emit messages. These bracelets were phones, essentially. Antiquated phones.]

Gods and Giants --- are these your army names? [He's taking mental notes as he asks. Houses had been mentioned. This could be some more fantastical form of Salamander, Dragon, and Leopard Armies, but as of yet he hasn't seen any uniforms or anything he can recognize as proper training or battle facilities.]

Or are the individual God houses your divisions? How are battles arranged?

[This place seems more like the game on his desktop interface than the battleschool, with things named after giants and gods, and castle structures.

He rubs at his forehead against the start of an ache at his temple before typing another]

Where can I find a commander?